Question

ayuda por favor urgente

Answer 1

solucion
(3h+6)^2=(3h+6)(3h+6)=9h^2+36h+36

(5t-2)^2=(5t-2)(5t+2)=25t^2-20t+4

(7y-2)^2=(7y-2)(7y+2)=49y^2-28y+4

(3n+4m)^2=9n^2+24nm+16m^2